AzSDKPreview

2.0.5

Framework/Listeners/Telemetry/UsageTelemetryHelper.ps1

Set-StrictMode -Version Latest

class UsageTelemetryHelper {
    hidden static [string] $TelemetrySessionId;
    hidden static [psobject] $EventBaseObject;

    hidden static $BaseEvent;

    static [void] Initialize() {
        if ($null -eq [UsageTelemetryHelper]::TelemetrySessionId) {
            [UsageTelemetryHelper]::TelemetrySessionId = [System.Guid]::NewGuid().ToString()
        }
    }

    hidden static [string] Mask([string] $toMask)
    {
        $sha384 = [System.Security.Cryptography.SHA384Managed]::new()
        $maskBytes = [System.Text.Encoding]::UTF8.GetBytes($toMask)
        $maskBytes = $sha384.ComputeHash($maskBytes)
        $sha384.Dispose()
        $take = 16
        $sb = [System.Text.StringBuilder]::new($take)
        for($i = 0; $i -lt ($take/2); $i++){
            $x = $sb.Append($maskBytes[$i].ToString("x2"))
        }
        return $sb.ToString();
    }

    hidden static [psobject] GetEventBaseObject([string] $eventName) {
        $eventObj = "" | Select-Object data, iKey, name, tags, time
        $eventObj.iKey = [Constants]::UsageTelemetryKey
        $eventObj.name = "Microsoft.ApplicationInsights." + [Constants]::UsageTelemetryKey.Replace("-", "") + ".Event"
        $eventObj.time = "{{TIME}}"

        $eventObj.tags = "" | Select-Object ai.internal.sdkVersion
        $eventObj.tags.'ai.internal.sdkVersion' = "dotnet: 2.1.0.26048"

        $eventObj.data = "" | Select-Object baseData, baseType
        $eventObj.data.baseType = "EventData"
        $eventObj.data.baseData = "" | Select-Object ver, name, measurements, properties

        $eventObj.data.baseData.ver = 2
        $eventObj.data.baseData.name = $eventName

        $eventObj.data.baseData.measurements = New-Object 'system.collections.generic.dictionary[string,double]'
        $eventObj.data.baseData.properties = New-Object 'system.collections.generic.dictionary[string,string]'
        [UsageTelemetryHelper]::SetCommonProperties($eventObj)
        return $eventObj;
    }

    hidden static [void] SetCommonProperties([psobject] $eventObj) {
        $eventObj.data.baseData.properties.Add("PSVersion", `
                    (Get-Variable -Name PSVersionTable).Value.PSVersion.ToString())   
    }

    static [void] PublishEvent([string] $eventName, [hashtable] $properties, [hashtable] $metrics) {
        try {
            $azsdkSettings = [ConfigurationManager]::GetAzSdkSettings();
            if($azsdkSettings.UsageTelemetryLevel -ne "Anonymous") { return; }
            $eventObj = [UsageTelemetryHelper]::GetEventBaseObject($eventName);
            $metrics.Keys | ForEach-Object {
                try {
                    $eventObj.data.baseData.measurements.Add($_ , $metrics[$_])
                }
                catch {}
            }
            $properties.Keys | ForEach-Object {
                try {
                    $eventObj.data.baseData.properties.Add($_ , $properties[$_])
                }
                catch {}
            }
            $eventJson = $(ConvertTo-Json $eventObj -Depth 100 -Compress).Replace("{{TIME}}", [datetime]::UtcNow.ToString("o")) 

            Invoke-WebRequest -Uri "https://dc.services.visualstudio.com/v2/track" `
                                -Method Post `
                                -ContentType "application/x-json-stream" `
                                -Body $eventJson `
                                -UseBasicParsing | Out-Null
        }
        catch {
        }
    }
}